Convert XML DOCBOOK to TEXINFO

DocBook XML, a subset of XML (Extensible Markup Language), serves as a markup language tailored for technical documentation. Developed in the early 90s, it was designed to standardize documentation across various software systems. Its uses include creating structured documents like books, articles, and manuals, ensuring consistency and ease of content transformation across different formats such as HTML, PDF, and EPUB. This standardization facilitates collaboration among developers and writers, enhances content reuse, and simplifies documentation maintenance.

The Texinfo is a documentation format developed by the GNU Project, created by Richard Stallman and Bob Chassell. It uses plain text files with @-commands to generate both online and printed documentation from a single source. Texinfo files, with the TEXI extension, support various output formats like HTML, PDF, and Info. This system simplifies maintaining consistent documentation across multiple formats.